import java.util.Calendar;


public class CalendarDemo {

    /**
     * @param args
     */
    public static void main(String[] args) {
    	Calendar calendar = Calendar.getInstance();
    	calendar.setTime(null);
    	int days = calendar.get(Calendar.DAY_OF_YEAR);
    	calendar.set(Calendar.MONTH, 12);
    	calendar.roll(Calendar.DATE, 15);
    	System.out.println(calendar.getTime());
    }

}
